The group says the independent poll was conducted by Essential Research and surveyed 1,100 people at random across the state.

Lock the Gate Alliance spokeswoman Carmel Flint says 84 per cent of respondents were opposed to coal seam gas drilling and 74 per cent supported a ban on the controversial mining method called "fracking".

She says it should send a message to the federal government who she says it appears to be pressuring the state government into watering down proposed new coal seam gas regulations.

"Well I think these findings are very significant because they show overwhelming support by the people of New South Wales for farmers and for protecting food producing lands from coal and gas mining," she said.

"This is a mainstream issue, this shows that 84 per cent of people in New South Wales are concerned about the damage that will be done to farmland if these industries are allowed to roll out recklessly across the state."